GRAUPNER JetCat 6810, Руководство пользователя

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Helicopter mechanics
with model turbine engine
10
1.3 Installing the left-hand roll / collective pitch servo
(bag J2-3)
The left-hand roll / collective pitch servo is installed in the opening in the left-hand chassis side
frame
from the outside , using M3 x 12 socket-head cap screws, washers and self-locking nuts,
with the cable exit facing aft . Fix a linkage ball on the underside of a suitable servo output
arm, 20 mm from the pivot axis, using an M2 x 8 screw and nut; fit the output arm on the servo
in such a way that it is exactly vertical and facing up when the servo is at centre.
The bellcrank is installed as shown in the illustration: first press the two ballraces into the
bellcrank hub, with the spacer sleeve between them, then fix the linkage balls to the outermost
holes of the arms using M2 x 8 screws. Note that the ball for the pushrod running to the servo is
fitted on the outside, the ball for the pushrod running to the swashplate on the inside. Mount the
bellcrank on the chassis using an M3 x 20 socket-head cap screw, spacer ring and self-locking
nut.
1.4 Installing the right-hand roll / collective pitch servo
(bag J2-3)
The right-hand roll / collective pitch servo is installed in the opening in the right-hand chassis
side frame
from the outside , using M3 x 12 socket-head cap screws, washers and self-locking
nuts, with the cable exit facing forward . Fix a linkage ball on the underside of a suitable servo
output arm, 20 mm from the pivot axis, using an M2 x 8 screw and nut; fit the output arm on the
servo in such a way that it is exactly vertical and facing up when the servo is at centre.